//1.使用common js的模块化规范
const {add,mul}=require('./mathUtils');
console.log(add(20, 30));
console.log(mul(20, 30));

//2.使用es6的模块化的规范
import {name,age,address} from "./info";
console.log(name);
console.log(age);
console.log(address);